cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
987
Views
0
Helpful
7
Replies

NAT PROBLEM

smavashev
Level 1
Level 1

2801 Router

SVI from 3550 192.168.20.0 0.0.0.255

ip dhcp pool

network 192.168.20.0 255.255.255.0

default-router 192.168.20.1

int fa0/0

ip nat inside

int fa0/1

ip nat outside

access-list 100 permit ip 192.168.20.0 0.0.0.255 any

ip nat inside source list 100 interface fa0/1 overload

****** the dhcp bindings are translating ****, nat is not translating - is there another way to configure a NAT statements ????

7 Replies 7

cadet alain
VIP Alumni
VIP Alumni

Hi,

on which device are you doing NAT? post output from:

-sh ip int br | exc una

- sh ip route

Regards.

Alain

Don't forget to rate helpful posts.

Don't forget to rate helpful posts.

I could not paste from output because it's on a different computer but I wrote it out.

NVI0                                                          unassigned                 NO            unset         up

Router# show ip route

Gateway of last resort is 0.0.0.0 to network 0.0.0.0

            67.0.0.0/8 us variably subnetted, 2 subnets, 2 masks

D            67.0.0.0/8 is a summary, 00:00:22, Null0

C            67.85.96.0/21 is directly connected, Fastethernet 0/1

D            192.168.20.0/24 [90/28416] via 10.1.1.2, 00:01:00, Fastethernet 0/0

               10.0.0.0/8 is variably subnetted, 2 subnets, 2 subnet masks

C                  10.1.1.0/24 is directly connected, Fastethernet 0/0

D                  10.0.0.0/8 is a summary, 00:00:22, Null0

S               167.206.195.6 [254/0] via 67.85.96., Fastethernet 0/1

S*            0.0.0.0 is directly connected, FastEthernet 0/1

Sh ip int brief

Interface                         IP address         Ok?     Method    Status

Fasthethernet 0/0            10.1.1.1             Yes     Manual      up

Fastethernet  0/1             67.85.101.117    Yes      NO            up

NVI0                                unassigned        NO      unset         up

I'm doing the config on the 2801 Router, my svi LAN is 192.168.20.0

Hi,

can you modify your default route and configure it with next-hop instead of outgoing interface.

Regards.

Alain

Don't forget to rate helpful posts.

Don't forget to rate helpful posts.

I have changed my default route to 0.0.0.0 0.0.0.0 to fastethernet 0/0 if that was what you were reffering too, i also changed the default router on SVI to 10.1.1.1 .

10.1.1.1 is the Fa0/1 interfafce on 2801

But still no luck, is my NAT configuration correct ? maybe I can configure again from scratch. ???

I'm sorry F0/0 is the 10.1.1.1 on 2801 router, and 10.1.1.2 is Fa0/9 switchport interface on 3550.

Hi,

you had something like this: ip route 0.0.0.0 0.0.0.0 f0/1 and you should change to something like this:

ip route 0.0.0.0 0.0.0.0 67.85.x.x  which is the ISP default gateway they gave you.

Regards.

Alain

Don't forget to rate helpful posts.

Don't forget to rate helpful posts.